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98 <h1>Grouping Elements</h1>
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100 <h3><a name=bookmark>Create a Standalone Group</a></h3>
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102 <p class="whs1">import SMESH_mechanic</p>
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104 <p class="whs1"> </p>
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106 <p class="whs1">smesh =
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107 SMESH_mechanic.smesh</p>
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109 <p class="whs1">mesh =
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110 SMESH_mechanic.mesh</p>
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112 <p class="whs1">salome = SMESH_mechanic.salome</p>
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114 <p class="whs1"> </p>
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116 <p class="whs2"># Get ids of all faces
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117 with area > 100 </p>
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119 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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120 smesh.FT_Area, smesh.FT_MoreThan, 100.)</p>
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122 <p class="whs1"> </p>
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124 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)
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127 <p class="whs1"> </p>
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129 <p class="whs3"># create a group consisting
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130 of faces with area > 100</p>
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132 <p class="whs1"> </p>
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134 <p class="whs1">aGroup = mesh.MakeGroupByIds("Area
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135 > 100", smesh.FACE, anIds)</p>
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137 <p class="whs1"> </p>
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139 <p class="whs3"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
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142 <p class="whs3"> </p>
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144 <p class="whs3"><img src="pics/create_group.png" x-maintain-ratio="TRUE" width="430px" height="391px" border="0" class="img_whs4"></p>
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146 <h3><a name=bookmark5>Create a Group on Geometry</a></h3>
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148 <p class="whs1">import salome</p>
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150 <p class="whs1">import geompy</p>
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152 <p class="whs1">import smesh</p>
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154 <p class="whs1"> </p>
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156 <p class="whs2"># create a box</p>
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158 <p class="whs1">box = geompy.MakeBox(0.,
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159 0., 0., 100., 100., 100.)</p>
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161 <p class="whs1">geompy.addToStudy(box,
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162 "box")</p>
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164 <p class="whs1"> </p>
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166 <p class="whs2"># add the first face
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167 of the box to the study</p>
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169 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">subShapeList
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170 = geompy.SubShapeAll(box, geompy.ShapeType["FACE"])</span></p>
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172 <p class="whs1">face = subShapeList[0]</p>
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174 <p class="whs1">geompy.addToStudyInFather(box,
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175 face, "face 1") </p>
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177 <p class="whs1"> </p>
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179 <p class="whs2"># create group of edges
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182 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGeomGroupE
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183 = geompy.CreateGroup(face, geompy.ShapeType["EDGE"])</span></p>
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185 <p class="whs1">geompy.AddObject(aGeomGroupE,
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188 <p class="whs1">geompy.AddObject(aGeomGroupE,
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191 <p class="whs1">geompy.AddObject(aGeomGroupE,
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194 <p class="whs1">geompy.AddObject(aGeomGroupE,
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197 <p class="whs1">geompy.addToStudyInFather(face,
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198 aGeomGroupE, "Group of Edges")</p>
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200 <p class="whs1"> </p>
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202 <p class="whs2"># create quadrangle
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203 2D mesh on the box</p>
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205 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">quadra
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206 = smesh.Mesh(box, "Box : quadrangle 2D mesh")</span></p>
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208 <p class="whs1">algo1D = quadra.Segment()</p>
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210 <p class="whs1">quadra.Quadrangle()</p>
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212 <p class="whs1">algo1D.NumberOfSegments(7)
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215 <p class="whs1"> </p>
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217 <p class="whs2"># compute the mesh</p>
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219 <p class="whs1">quadra.Compute()</p>
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221 <p class="whs1"> </p>
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223 <p class="whs2"># create SMESH group
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224 on the face with name "SMESHGroup1"</p>
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226 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aSmeshGroup1
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227 = quadra.GroupOnGeom(face, "SMESHGroup1")</span></p>
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229 <p class="whs1"> </p>
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231 <p class="whs2"># create SMESH group
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232 on <aGeomGroupE> with default name</p>
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234 <p class="whs1">aSmeshGroup2 = quadra.GroupOnGeom(aGeomGroupE)
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237 <p class="whs3"> </p>
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239 <p class="whs3"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
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242 <h3><a name=bookmark1>Edit a Group</a></h3>
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244 <p class="whs1">import SMESH_mechanic</p>
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246 <p class="whs1"> </p>
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248 <p class="whs1">smesh =
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249 SMESH_mechanic.smesh</p>
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251 <p class="whs1">mesh =
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252 SMESH_mechanic.mesh</p>
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254 <p class="whs1">salome = SMESH_mechanic.salome</p>
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256 <p class="whs1"> </p>
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258 <p class="whs2"># Get ids of all faces
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259 with area > 35</p>
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261 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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262 smesh.FT_Area, smesh.FT_MoreThan, 35.)</p>
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264 <p class="whs1"> </p>
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266 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)
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269 <p class="whs1"> </p>
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271 <p class="whs1">print "Criterion:
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272 Area > 35, Nb = ", len(anIds)</p>
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274 <p class="whs1"> </p>
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276 <p class="whs2"># create a group by
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277 adding elements with area > 35</p>
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279 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroup
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280 = mesh.CreateEmptyGroup(smesh.FACE, "Area > 35")</span></p>
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282 <p class="whs1">aGroup.Add(anIds)
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285 <p class="whs1"> </p>
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287 <p class="whs2"># Get ids of all faces
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288 with area > 40</p>
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290 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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291 smesh.FT_Area, smesh.FT_MoreThan, 40.)</p>
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293 <p class="whs1"> </p>
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295 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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297 <p class="whs1"> </p>
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299 <p class="whs1">print "Criterion:
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300 Area > 40, Nb = ", len(anIds) </p>
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302 <p class="whs1"> </p>
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304 <p class="whs2"># create a group of
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305 elements with area [35; 40] by removing elements with area > 40 from
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308 <p class="whs1">aGroup.Remove(anIds)
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311 <p class="whs1"> </p>
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313 <p class="whs2"># print the result</p>
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315 <p class="whs1">aGroupElemIDs =
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316 aGroup.GetListOfID()</p>
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318 <p class="whs1"> </p>
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320 <p class="whs1">print "Criterion:
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321 35 < Area < 40, Nb = ", len(aGroupElemIDs)</p>
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323 <p class="whs1">j = 1</p>
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325 <p class="whs1">for i in range(len(aGroupElemIDs)):</p>
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327 <p class="whs1"> if
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328 j > 20: j = 1; print ""</p>
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330 <p class="whs1"> print
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331 aGroupElemIDs[i],</p>
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333 <p class="whs1"> j
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336 <p class="whs1"> pass</p>
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338 <p class="whs1">print ""</p>
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340 <p class="whs1"> </p>
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342 <p class="whs1">salome.sg.updateObjBrowser(1)
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345 <p class="whs3"> </p>
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347 <p class="whs3"><img src="pics/editing_groups1.png" x-maintain-ratio="TRUE" width="463px" height="417px" border="0" class="img_whs5"> <img src="pics/editing_groups2.png" x-maintain-ratio="TRUE" width="541px" height="417px" border="0" class="img_whs6"></p>
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349 <h3><a name=bookmark2>Union of two groups</a></h3>
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351 <p class="whs1">import SMESH_mechanic</p>
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353 <p class="whs1"> </p>
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355 <p class="whs1">smesh =
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356 SMESH_mechanic.smesh</p>
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358 <p class="whs1">mesh =
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359 SMESH_mechanic.mesh</p>
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361 <p class="whs1">salome = SMESH_mechanic.salome</p>
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363 <p class="whs1"> </p>
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365 <p class="whs2"># Criterion : AREA
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368 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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369 smesh.FT_Area, smesh.FT_MoreThan, 20.)</p>
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371 <p class="whs1"> </p>
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373 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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375 <p class="whs1"> </p>
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377 <p class="whs1">print "Criterion:
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378 Area > 20, Nb = ", len( anIds ) </p>
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380 <p class="whs1"> </p>
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382 <p class="whs2"># create a group by
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383 adding elements with area > 20</p>
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385 <p class="whs1">aGroup1 = mesh.CreateEmptyGroup(SMESH.FACE,
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386 "Area > 20")</p>
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388 <p class="whs1">aGroup1.Add(anIds)</p>
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390 <p class="whs1"> </p>
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392 <p class="whs2"># Criterion : AREA
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395 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aFilter
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396 = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_EqualTo, 20.)</span></p>
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398 <p class="whs1"> </p>
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400 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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402 <p class="whs1"> </p>
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404 <p class="whs1">print "Criterion:
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405 Area = 20, Nb = ", len( anIds ) </p>
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407 <p class="whs1"> </p>
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409 <p class="whs2"># create a group by
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410 adding elements with area = 20</p>
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412 <p class="whs1">aGroup2 = mesh.CreateEmptyGroup(
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413 smesh.FACE, "Area = 20" )</p>
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415 <p class="whs1"> </p>
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417 <p class="whs1">aGroup2.Add(anIds)</p>
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419 <p class="whs1"> </p>
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421 <p class="whs2"># create union group
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422 : area >= 20</p>
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424 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroup3
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425 = mesh.UnionGroups(aGroup1, aGroup2, "Area >= 20")</span></p>
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427 <p class="whs1">print "Criterion:
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428 Area >= 20, Nb = ", len(aGroup3.GetListOfID())</p>
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430 <p class="whs1"> </p>
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432 <p class="whs2"># Criterion : AREA
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435 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aFilter
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436 = smesh.GetFilter(smesh.FACE, smesh.FT_Area, smesh.FT_LessThan, 20.)</span></p>
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438 <p class="whs1"> </p>
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440 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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442 <p class="whs1"> </p>
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444 <p class="whs1">print "Criterion:
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445 Area < 20, Nb = ", len(anIds)</p>
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447 <p class="whs1"> </p>
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449 <p class="whs2"># create a group by
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450 adding elements with area < 20</p>
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452 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroup4
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453 = mesh.CreateEmptyGroup(smesh.FACE, "Area < 20")</span></p>
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455 <p class="whs1">aGroup4.Add(anIds)</p>
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457 <p class="whs1"> </p>
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459 <p class="whs2"># create union group
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460 : area >= 20 and area < 20</p>
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462 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroup5
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463 = mesh.UnionGroups(aGroup3, aGroup4, "Any Area")</span></p>
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465 <p class="whs1">print "Criterion:
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466 Any Area, Nb = ", len(aGroup5.GetListOfID())</p>
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468 <p class="whs1"> </p>
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470 <p class="whs1">salome.sg.updateObjBrowser(1)
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473 <p class="whs1"> </p>
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475 <p class="whs1"><img src="pics/union_groups1.png" x-maintain-ratio="TRUE" width="394px" height="425px" border="0" class="img_whs7"></p>
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477 <p class="whs1"> </p>
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479 <p class="whs1"><img src="pics/union_groups2.png" x-maintain-ratio="TRUE" width="368px" height="379px" border="0" class="img_whs8"> <img src="pics/union_groups3.png" x-maintain-ratio="TRUE" width="344px" height="381px" border="0" class="img_whs9"></p>
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481 <p class="whs1"> </p>
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483 <h3><a name=bookmark3>Intersection of two groups</a></h3>
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485 <p class="whs1">import SMESH_mechanic</p>
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487 <p class="whs1"> </p>
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489 <p class="whs1">smesh =
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490 SMESH_mechanic.smesh</p>
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492 <p class="whs1">mesh =
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493 SMESH_mechanic.mesh</p>
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495 <p class="whs1">salome = SMESH_mechanic.salome</p>
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497 <p class="whs1"> </p>
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499 <p class="whs2"># Criterion : AREA
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502 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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503 smesh.FT_Area, smesh.FT_MoreThan, 20.)</p>
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505 <p class="whs1"> </p>
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507 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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509 <p class="whs1"> </p>
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511 <p class="whs1">print "Criterion:
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512 Area > 20, Nb = ", len(anIds) </p>
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514 <p class="whs1"> </p>
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516 <p class="whs2"># create a group by
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517 adding elements with area > 20</p>
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519 <p class="whs1">aGroup1 = mesh.CreateEmptyGroup(SMESH.FACE,
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520 "Area > 20")</p>
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522 <p class="whs1">aGroup1.Add(anIds)</p>
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524 <p class="whs1"> </p>
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526 <p class="whs2"># Criterion : AREA
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529 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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530 smesh.FT_Area, smesh.FT_LessThan, 60.)</p>
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532 <p class="whs1"> </p>
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534 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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536 <p class="whs1"> </p>
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538 <p class="whs1">print "Criterion:
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539 Area < 60, Nb = ", len(anIds) </p>
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541 <p class="whs1"> </p>
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543 <p class="whs2"># create a group by
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544 adding elements with area < 60</p>
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546 <p class="whs1">aGroup2 = mesh.CreateEmptyGroup(SMESH.FACE,
\r
547 "Area < 60")</p>
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549 <p class="whs1">aGroup2.Add(anIds)</p>
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551 <p class="whs1"> </p>
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553 <p class="whs2"># create an intersection
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554 of groups : 20 < area < 60</p>
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556 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroup3
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557 = mesh.IntersectGroups(aGroup1, aGroup2, "20 < Area < 60")</span></p>
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559 <p class="whs1">print "Criterion:
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560 20 < Area < 60, Nb = ", len(aGroup3.GetListOfID())</p>
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562 <p class="whs1"> </p>
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564 <p class="whs1">salome.sg.updateObjBrowser(1)
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567 <p class="whs3"> </p>
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569 <p class="whs3"><img src="pics/intersect_groups1.png" x-maintain-ratio="TRUE" width="314px" height="351px" border="0" class="img_whs10"> <img src="pics/intersect_groups2.png" x-maintain-ratio="TRUE" width="319px" height="351px" border="0" class="img_whs11"> <img src="pics/intersect_groups3.png" x-maintain-ratio="TRUE" width="304px" height="352px" border="0" class="img_whs12"></p>
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571 <h3><a name=bookmark4>Cut of two groups</a></h3>
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573 <p class="whs1">import SMESH_mechanic</p>
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575 <p class="whs1"> </p>
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577 <p class="whs1">smesh =
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578 SMESH_mechanic.smesh</p>
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580 <p class="whs1">mesh =
\r
581 SMESH_mechanic.mesh</p>
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583 <p class="whs1">salome = SMESH_mechanic.salome</p>
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585 <p class="whs1"> </p>
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587 <p class="whs2"># Criterion : AREA
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590 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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591 smesh.FT_Area, smesh.FT_MoreThan, 20.)</p>
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593 <p class="whs1"> </p>
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595 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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597 <p class="whs1"> </p>
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599 <p class="whs1">print "Criterion:
\r
600 Area > 20, Nb = ", len(anIds) </p>
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602 <p class="whs1"> </p>
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604 <p class="whs2"># create a group by
\r
605 adding elements with area > 20</p>
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607 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroupMain
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608 = mesh.MakeGroupByIds("Area > 20", smesh.FACE, anIds)</span></p>
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610 <p class="whs1"> </p>
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612 <p class="whs2"># Criterion : AREA
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615 <p class="whs1">aFilter = smesh.GetFilter(smesh.FACE,
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616 smesh.FT_Area, smesh.FT_LessThan, 60.)</p>
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618 <p class="whs1"> </p>
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620 <p class="whs1">anIds = mesh.GetIdsFromFilter(aFilter)</p>
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622 <p class="whs1"> </p>
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624 <p class="whs1">print "Criterion:
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625 Area < 60, Nb = ", len(anIds) </p>
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627 <p class="whs1"> </p>
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629 <p class="whs2"># create a group by
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630 adding elements with area < 60</p>
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632 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroupTool
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633 = mesh.MakeGroupByIds("Area < 60", smesh.FACE, anIds)</span></p>
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635 <p class="whs1"> </p>
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637 <p class="whs2"># create a cut of groups
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638 : area >= 60</p>
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640 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">aGroupRes
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641 = mesh.CutGroups(aGroupMain, aGroupTool, "Area >= 60")</span></p>
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643 <p class="whs1">print "Criterion:
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644 Area >= 60, Nb = ", len(aGroupRes.GetListOfID())</p>
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646 <p class="whs1"> </p>
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648 <p class="whs1">salome.sg.updateObjBrowser(1)
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651 <p class="whs1"> </p>
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653 <p class="whs3"><img src="pics/cut_groups1.png" x-maintain-ratio="TRUE" width="318px" height="355px" border="0" class="img_whs13"> <img src="pics/cut_groups2.png" x-maintain-ratio="TRUE" width="318px" height="355px" border="0" class="img_whs14"> <img src="pics/cut_groups3.png" x-maintain-ratio="TRUE" width="320px" height="354px" border="0" class="img_whs15"></p>
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655 <script type="text/javascript" language="javascript1.2">
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657 if (window.writeIntopicBar)
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658 writeIntopicBar(0);
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